OpenSignal app for Android is a great utility app that offers you great information on your phone's signal. With this app you can monitor your phone's data speed, wifi speed, and the quality of your VOIP. Also with this app you have the option to speed test your phone's signal to get a rating for your web, video, and VOIP. This app is great because is takes a lot of popular apps that are similar to this one and puts it all into one!Plus this app is completely free! Download this app using the link below! -----------------------------------------------------------------------------------------------------------------------------